Windshield Wiper/Washer System.

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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oil pressure gage should indicate the minimum pressure.

If the oil

pressure gage operates correctly, proceed to step 3. If the gage did

not operate correctly, proceed to the next step.

Step 2.

Disconnect leads 36A, 27H, and 58G from the oil pressure

gage. Using a multimeter, check for battery voltage at lead 27H with

the rotary switch in the RUN position.

Then check for continuity

from lead 58G to ground, and continuity through lead 36A.

If all

leads test correctly, replace the oil pressure gage following the

procedures in paragraph 4-13, page 4-26 of the TM. If any lead does

not test correctly, repair the body wiring harness following the

procedures contained in paragraph 4-62, page 4-110 of the TM. If the

wiring harness is beyond repair, notify IDS/IGS maintenance.

Step 3.

Remove the oil pressure sending unit.

Using a mechanical

gage, check the oil pressure.

If the oil pressure is 6-15 psi at

idle, replace the oil pressure sending unit following the procedures

in paragraph 4-25, page 4-43 of the TM. If the oil pressure is less

than 6 psi, notify IDS/IGS maintenance.

Windshield Wiper/Washer System.

While reading through these

paragraphs concerning troubleshooting malfunction(s) in this system,

refer to figure 6 (on the following page).

Troubleshooting the Malfunction: WINDSHIELD WASHER INOPERATIVE (WIPER

MOTOR OPERATES PROPERLY).

Step 1. Blow through the hoses and nozzles to check for blockage(s).

Replace any blocked hoses following the procedures in paragraph 10-

50, page 10-74 of the TM, or nozzles by following the procedures

contained in paragraph 10-51, page 10-75 of the TM.